Title from disc label.Tracks 1-15 recorded live 1956 December 12 Dvorák Hall, Prague.Tracks 16-18 recorded live 1959 November 2 Dvorák Hall, Prague.1st-2nd works reissued from Praga PRD 254 033.Program notes in English and French (10 pages) inserted in container.Durations: 27:25; 29:59; 20:33.